@misc{indiciae4331b8570d77,
  title = {Optimal interpolation and the Kalman filter},
  author = {Cohn, S. and Isaacson, E. and Ghil, M.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830033191},
  note = {Source identifier: 19830033191}
}